tf.image.rgb_to_grayscale(images, name=None)

tf.image.rgb_to_grayscale(images, name=None)

See the guide: Images > Converting Between Colorspaces

Converts one or more images from RGB to Grayscale.

Outputs a tensor of the same DType and rank as images. The size of the last dimension of the output is 1, containing the Grayscale value of the pixels.


  • images: The RGB tensor to convert. Last dimension must have size 3 and should contain RGB values.
  • name: A name for the operation (optional).


The converted grayscale image(s).

Defined in tensorflow/python/ops/